Heat transfer in granular media with weakly interacting particles
We study the heat transfer in weakly interacting particle systems in vacuum. The particles have surface roughness with self-affine fractal properties, as expected for mineral particles produced by fracture, e.g., by crunching brittle materials in a mortar, or from thermal fatigue or the impact of mi...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2022-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0108811 |
| _version_ | 1811232031443517440 |
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| author | B. N. J. Persson J. Biele |
| author_facet | B. N. J. Persson J. Biele |
| author_sort | B. N. J. Persson |
| collection | DOAJ |
| description | We study the heat transfer in weakly interacting particle systems in vacuum. The particles have surface roughness with self-affine fractal properties, as expected for mineral particles produced by fracture, e.g., by crunching brittle materials in a mortar, or from thermal fatigue or the impact of micrometeorites on asteroids. We show that the propagating electromagnetic (EM) waves give the dominant heat transfer for large particles, while for small particles both the evanescent EM-waves and the phononic contribution from the area of real contact are important. As an application, we discuss the heat transfer in rubble pile asteroids. |
| first_indexed | 2024-04-12T10:56:20Z |
| format | Article |
| id | doaj.art-202b4b7363c44ee1a851ebf21b8e721d |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-12T10:56:20Z |
| publishDate | 2022-10-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-202b4b7363c44ee1a851ebf21b8e721d2022-12-22T03:36:05ZengAIP Publishing LLCAIP Advances2158-32262022-10-011210105307105307-2010.1063/5.0108811Heat transfer in granular media with weakly interacting particlesB. N. J. Persson0J. Biele1Peter Grünberg Institute (PGI-1), Forschungszentrum Jülich, 52425 Jülich, EU, GermanyGerman Aerospace Center, DLR, 51147 Köln, EU, GermanyWe study the heat transfer in weakly interacting particle systems in vacuum. The particles have surface roughness with self-affine fractal properties, as expected for mineral particles produced by fracture, e.g., by crunching brittle materials in a mortar, or from thermal fatigue or the impact of micrometeorites on asteroids. We show that the propagating electromagnetic (EM) waves give the dominant heat transfer for large particles, while for small particles both the evanescent EM-waves and the phononic contribution from the area of real contact are important. As an application, we discuss the heat transfer in rubble pile asteroids.http://dx.doi.org/10.1063/5.0108811 |
| spellingShingle | B. N. J. Persson J. Biele Heat transfer in granular media with weakly interacting particles AIP Advances |
| title | Heat transfer in granular media with weakly interacting particles |
| title_full | Heat transfer in granular media with weakly interacting particles |
| title_fullStr | Heat transfer in granular media with weakly interacting particles |
| title_full_unstemmed | Heat transfer in granular media with weakly interacting particles |
| title_short | Heat transfer in granular media with weakly interacting particles |
| title_sort | heat transfer in granular media with weakly interacting particles |
| url | http://dx.doi.org/10.1063/5.0108811 |
| work_keys_str_mv | AT bnjpersson heattransferingranularmediawithweaklyinteractingparticles AT jbiele heattransferingranularmediawithweaklyinteractingparticles |